Rotary engine.



R. A. STEWART.

ROTARY ENGINE.

APPLICATION FILED AUG. 9, 191a.

Patented NOV. 18, 1913.

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UNITED STATES PATENT OFFICE.

ROBERT A. STEWART, DE LOS ANGELES, CALIFORNIA.

ROTARY ENGINE.

To all whom it may concern:

Be it known that 1, ROBERT A. STEWART, a citizen of the United States, residing at the city of Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Rotary Engines, of which the following is a specification.

My invention relates more particularly to that class of rotary engines in which the rotor is actuated by reaction and the object thereof is to provide an engine on improved general construction and to simplify the manner of constructing the same.

I accomplish this object by the device described herein and illustrated in the accompanying drawings forming a part hereof in which Figure 1 is a side elevation of my improved engine with a part broken away to illustrate the interior construction. Fig. 2 is an edge elevation partly in section of Fig. 1. Fig. 3 is a perspective View of one of the steam nozzles.

My device consists substantially of a cas ing 5 and a rotor ('3. The casing comprises an annular cylindrical portion 7 and heads 8 and 9 which heads are provided centrally thereof with bearings 10 and 11. These bearings support a shaft 12 th rein upon which is mounted a rotor 6. Steam chambers 13 are provided in the perimeter of casing 5 and are connected to a steam supply (not shown) by pipes 14. Rotor 6 is substantially hollow centrally thereof and is provided with an annular rim 15 which rim is provided with a number of slots 16 cut therein which are at an acute angle to a tangent plane to the rotor at that point. Around the perimeter of rim 15 is formed a series of buckets or pockets 17 adjacent the inner ends of slots 16, there being one bucket for each slot. A steam nozzle is provided in each of these slots and projects from the outer edge of rim 15 to near the bottom of the buckets. Nozzles 18 are substantially funnel shaped with the narrow end 18 pro- Specification of Letters Patent.

Application filed August 9, 1913.

Patented Nov. 18, 1913.

Serial No. 783,896.

jecting into the buckets. The central hollow portion of rotor 6 forms an exhaust chamber 19 from which leads an exhaust pipe 20.

It will be understood that buckets 17 are larger in diameter than the ends 18 of the nozzles to provide free passage of the exhausted steam therefrom. The number of nozzles and buckets may be varied at will and it will be easily understood that a greater or less number of the same will provide a greater or less powerful engine. Supply pipes 11 may be connected together to one main supply pipe and throttle (not shown) or may each be connected to a separate supply pipe and throttle.

Having described my invention what I claim is:

1. A rotary engine comprising an outer casing having steam chambers in the perimeter thereof and supply pipes leading into arid chambers; an annular rotor mounted within said casing having semi-circular buckets formed on the inner periphery thereof and provided with a centrally disposed exhaust chamber; nozzles extending from the outer periphery of the rotor to the buckets and adapted to form connections between the buckets and the steam. chambers; and an exhaust outlet from said exhaust chamber.

2. In a rotary engine, an outer casing provided with one or more steam chambers around the inner periphery; a rotor mounted within said casing and provided with a centrally disposed exhaust chamber and a series of arcuate buckets on the inner periphery thereof; connections between said buckets and steam chambers; one or more steam sup ply pipes communicating with said steam chambers; and one or more exhaust pipes leading from said exhaust chamber.

In witness that I claim the foregoing I have hereunto set my hand this 31 day of July 1913.

ROBERT A. STEWART. In presence of FRANK IVATERFIELD, E. P. PARKER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

